Sandstone knowledge

Control class, bedding, finish and exposure.

The 22 catalogue routes are commercial names. ASTM C616 separates sandstone, quartzitic sandstone and quartzite; the supplied class, bedding, source, lot range and performance evidence must therefore be confirmed rather than inferred.

Browse sandstone Build project request

live routes

regional references

quartz-based classes

lot origins verified

Identity control

Sandstone naming does not establish quartz-based class.

Petrography and project evidence should resolve sandstone, quartzitic sandstone or quartzite, including mineralogy, cement, porosity, bedding and alteration relevant to the intended exposure.

Bedding

Record natural bed, face, cutting and installation orientation; strength and weathering can be directional.

Source

Regional associations guide sourcing questions but do not certify the quarry, bench or supplied lot.

Range

Approve dry and wet range panels, surface relief, banding, mineral marks, thickness and edge tolerances.

Buying programmes

Four approval paths cover all 22 routes.

These appearance programmes structure comparisons; they are not grades or origin claims.

3 routes

Grey & green paving

Compare shade mix, bedding/cleft character, iron/mineral marking, thickness calibration, edgework and wet appearance.

Approve dry and wet range panels from the current lot, plus exact paving finish and dimensional tolerance.

Kandla Grey Raj Green Sagar Black

7 routes

Buff, yellow & beige

Compare background warmth, banding, fossils/mineral marks, oxidation, porosity, shade spread and weathering response.

Approve range and weathering expectations by lot; pale colour labels do not define absorption, durability or quarry.

Mint Buff Yellow Dholpur Beige Paharpur Beige Desert Yellow Fossil Mint

9 routes

Red & brown

Compare iron-rich colour, banding, shade spread, surface markings, bedding direction and finish response.

Use representative crates/range panels and confirm staining, salt, wet colour and cleaning behaviour for the destination.

Autumn Brown Modak Chocolate Dholpur Red Agra Red Paharpur Red Jodhpur Red Desert Brown Fossil Chocolate

3 routes

Woodgrain & rainbow movement

Compare directional banding, slab/tile sequence, cutting direction, colour transitions and layout continuity.

Map movement and direction before cutting; one small sample cannot approve a multicolour or woodgrain programme.

Teakwood Rainbow Copper

Evidence matrix

Tie every result to method, orientation and lot.

Use licensed current ASTM, BIS and project requirements for acceptance. No universal catalogue value can replace source- and exposure-specific evidence.

Commercial identity

commercial-identity

Approved trade name, aliases and substitutions; colour and geographic words alone do not prove source or class.

Quartz-based class

quartz-based-class

Sandstone, quartzitic sandstone or quartzite classification supported by petrography/free-silica framework where specification requires it.

Source & lot

origin-and-lot

Country, region, quarry/program and block/bench/lot chain at the precision claimed.

Bedding & cutting

bedding-orientation

Natural bed, riven/cleft direction, face orientation, load orientation and installation orientation.

Visual range

visual-range

Dry and wet range, banding, fossils, iron marks, oxidation, inclusions and approval reference.

Dimensions & calibration

dimensions

Finished size, thickness range, calibration, squareness, flatness, edge and surface texture.

Absorption & density

absorption-density

Lot-linked ASTM C97/IS methods with specimen, condition, laboratory, report and date.

Compression & MOR

compression-mor

Keep ASTM C170 and C99 results distinct; record wet/dry state and orientation relative to bedding.

Flexural strength

flexure

ASTM C880 or agreed method where module/panel design needs it, with orientation and wet/dry state.

Abrasion & slip

abrasion-slip

Traffic- and finish-specific results; test the exact surface in relevant wet/dry conditions.

Weathering exposure

salt-freeze-weathering

Destination-specific salt, freeze–thaw/deicing, wetting/drying, acidic atmosphere and staining assessment.

Sealer & maintenance

sealer-cleaning

Mock-up sealer, jointing, cleaning chemistry, colour change, efflorescence and maintenance plan.

Finish control

Texture affects dimensions, cleaning and slip.

Approve the exact stone–finish combination from current production.

Natural cleft / riven

Control relief, high points, thickness range, bedding integrity, wheelchair/trolley tolerances, wet slip and cleanability.

Honed

Approve shade change, scratch/mark visibility, wet slip, sealing and exposure; not every sandstone will hone uniformly.

Sandblasted

Confirm texture depth, friability, colour shift, edges, cleaning and lot consistency.

Shot-blasted / Bush hammered

Confirm thickness allowance, surface integrity, abrasion, edge setbacks, slip and maintenance.

Tumbled

Define edge wear, surface distress, dimensional range, colour mix and packing protection.

Application control

Exposure and assembly govern suitability.

Loads, module, support, drainage, joints, climate and maintenance must be assessed together.

Exterior paving & plazas

Engineering review

Loads, module/thickness, bedding, drainage, jointing, wet slip, abrasion, salt/climate exposure and movement.

Pool surrounds

Engineering review

Barefoot wet slip, chemicals/salts, coping geometry, drainage, finish, sealer and maintenance.

Steps & thresholds

Conditional

Piece geometry, bedding orientation, flexural capacity, nosing, wet slip, edge durability and support.

Interior flooring

Conditional

Traffic, finish, calibration, lippage, substrate, abrasion/slip, sealing and cleaning.

Wall cladding

Engineering review

Panel size/weight, bedding orientation, fixing/anchors, flexure, wind/seismic exposure, joints and drainage.

Landscape masonry

Conditional

Unit geometry, structural design, saturation, capillary rise, salts, coping, mortar compatibility and weathering.

RFQ checklist

Compare like-for-like supply proposals.

Control class, source, bedding, finish, dimensions, evidence, inspection and logistics.

1Commercial name, aliases and prohibited substitutes
2Sandstone/quartzitic sandstone/quartzite classification requirement
3Quarry/program, bench/lot and origin evidence
4Application, destination, climate, loads and governing standard
5Format, dimensions, thickness range, calibration and edge
6Bedding/cutting/installation orientation
7Finish plus approved dry and wet range
8Method-specific lot tests and acceptance criteria
9Inspection, mock-up, crate mix and replacement policy
10Packing, crate labels, Incoterm, port and handling constraints

Blocked shortcuts

Colour or locality word treated as quarry proof.
Quartzite and sandstone used interchangeably.
Dry sample approving wet appearance or slip.
Strength result without bedding orientation.
Exterior paving without drainage and climate review.
“Natural cleft” without relief and thickness limits.

Specify sandstone by class, bedding, lot and exposure.

Build project request

Harobal Stones

Luxury Architectural Crafts

Sandstone knowledge

Control class, bedding, finish and exposure.

Browse sandstone Build project request

live routes

regional references

quartz-based classes

lot origins verified

Identity control

Sandstone naming does not establish quartz-based class.

Petrography and project evidence should resolve sandstone, quartzitic sandstone or quartzite, including mineralogy, cement, porosity, bedding and alteration relevant to the intended exposure.

Bedding

Record natural bed, face, cutting and installation orientation; strength and weathering can be directional.

Source

Regional associations guide sourcing questions but do not certify the quarry, bench or supplied lot.

Range

Approve dry and wet range panels, surface relief, banding, mineral marks, thickness and edge tolerances.

Buying programmes

Four approval paths cover all 22 routes.

These appearance programmes structure comparisons; they are not grades or origin claims.

3 routes

Grey & green paving

Compare shade mix, bedding/cleft character, iron/mineral marking, thickness calibration, edgework and wet appearance.

Approve dry and wet range panels from the current lot, plus exact paving finish and dimensional tolerance.

Kandla Grey Raj Green Sagar Black

7 routes

Buff, yellow & beige

Compare background warmth, banding, fossils/mineral marks, oxidation, porosity, shade spread and weathering response.

Approve range and weathering expectations by lot; pale colour labels do not define absorption, durability or quarry.

Mint Buff Yellow Dholpur Beige Paharpur Beige Desert Yellow Fossil Mint

9 routes

Red & brown

Compare iron-rich colour, banding, shade spread, surface markings, bedding direction and finish response.

Use representative crates/range panels and confirm staining, salt, wet colour and cleaning behaviour for the destination.

Autumn Brown Modak Chocolate Dholpur Red Agra Red Paharpur Red Jodhpur Red Desert Brown Fossil Chocolate

3 routes

Woodgrain & rainbow movement

Compare directional banding, slab/tile sequence, cutting direction, colour transitions and layout continuity.

Map movement and direction before cutting; one small sample cannot approve a multicolour or woodgrain programme.

Teakwood Rainbow Copper

Evidence matrix

Tie every result to method, orientation and lot.

Use licensed current ASTM, BIS and project requirements for acceptance. No universal catalogue value can replace source- and exposure-specific evidence.

Commercial identity

commercial-identity

Approved trade name, aliases and substitutions; colour and geographic words alone do not prove source or class.

Quartz-based class

quartz-based-class

Sandstone, quartzitic sandstone or quartzite classification supported by petrography/free-silica framework where specification requires it.

Source & lot

origin-and-lot

Country, region, quarry/program and block/bench/lot chain at the precision claimed.

Bedding & cutting

bedding-orientation

Natural bed, riven/cleft direction, face orientation, load orientation and installation orientation.

Visual range

visual-range

Dry and wet range, banding, fossils, iron marks, oxidation, inclusions and approval reference.

Dimensions & calibration

dimensions

Finished size, thickness range, calibration, squareness, flatness, edge and surface texture.

Absorption & density

absorption-density

Lot-linked ASTM C97/IS methods with specimen, condition, laboratory, report and date.

Compression & MOR

compression-mor

Keep ASTM C170 and C99 results distinct; record wet/dry state and orientation relative to bedding.

Flexural strength

flexure

ASTM C880 or agreed method where module/panel design needs it, with orientation and wet/dry state.

Abrasion & slip

abrasion-slip

Traffic- and finish-specific results; test the exact surface in relevant wet/dry conditions.

Weathering exposure

salt-freeze-weathering

Destination-specific salt, freeze–thaw/deicing, wetting/drying, acidic atmosphere and staining assessment.

Sealer & maintenance

sealer-cleaning

Mock-up sealer, jointing, cleaning chemistry, colour change, efflorescence and maintenance plan.

Finish control

Texture affects dimensions, cleaning and slip.

Approve the exact stone–finish combination from current production.

Natural cleft / riven

Control relief, high points, thickness range, bedding integrity, wheelchair/trolley tolerances, wet slip and cleanability.

Honed

Approve shade change, scratch/mark visibility, wet slip, sealing and exposure; not every sandstone will hone uniformly.

Sandblasted

Confirm texture depth, friability, colour shift, edges, cleaning and lot consistency.

Shot-blasted / Bush hammered

Confirm thickness allowance, surface integrity, abrasion, edge setbacks, slip and maintenance.

Tumbled

Define edge wear, surface distress, dimensional range, colour mix and packing protection.

Application control

Exposure and assembly govern suitability.

Loads, module, support, drainage, joints, climate and maintenance must be assessed together.

Exterior paving & plazas

Engineering review

Loads, module/thickness, bedding, drainage, jointing, wet slip, abrasion, salt/climate exposure and movement.

Pool surrounds

Engineering review

Barefoot wet slip, chemicals/salts, coping geometry, drainage, finish, sealer and maintenance.

Steps & thresholds

Conditional

Piece geometry, bedding orientation, flexural capacity, nosing, wet slip, edge durability and support.

Interior flooring

Conditional

Traffic, finish, calibration, lippage, substrate, abrasion/slip, sealing and cleaning.

Wall cladding

Engineering review

Panel size/weight, bedding orientation, fixing/anchors, flexure, wind/seismic exposure, joints and drainage.

Landscape masonry

Conditional

Unit geometry, structural design, saturation, capillary rise, salts, coping, mortar compatibility and weathering.

RFQ checklist

Compare like-for-like supply proposals.

Control class, source, bedding, finish, dimensions, evidence, inspection and logistics.

1Commercial name, aliases and prohibited substitutes
2Sandstone/quartzitic sandstone/quartzite classification requirement
3Quarry/program, bench/lot and origin evidence
4Application, destination, climate, loads and governing standard
5Format, dimensions, thickness range, calibration and edge
6Bedding/cutting/installation orientation
7Finish plus approved dry and wet range
8Method-specific lot tests and acceptance criteria
9Inspection, mock-up, crate mix and replacement policy
10Packing, crate labels, Incoterm, port and handling constraints

Blocked shortcuts

Colour or locality word treated as quarry proof.
Quartzite and sandstone used interchangeably.
Dry sample approving wet appearance or slip.
Strength result without bedding orientation.
Exterior paving without drainage and climate review.
“Natural cleft” without relief and thickness limits.

Specify sandstone by class, bedding, lot and exposure.

Build project request